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Lytechinus williamsi : ウィキペディア英語版 | Lytechinus williamsi
''Lytechinus williamsi'', the jewel urchin, is a sea urchin in the family Toxopneustidae. It occurs on shallow reefs off the coasts of Panama, Belize, the Florida Keys and Jamaica. ==Description== The jewel urchin grows to a diameter of about and has spines up to long. Many of them are shorter than this and provide a dense covering. The test is usually a pale brown colour with a red or dark brown stripe along the joints of the main interambulacral plates. The spines are either deep green or white and have a ridge running along one side of each, a fact that distinguishes this species from the very similar ''Lytechinus variegatus''. In between the spines are large purple tweezer shaped structures called pedicellariae which are also distinctive, ''L. variegatus'' having white pedicellariae.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Lytechinus williamsi」の詳細全文を読む
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